Programs in this directory are NOT GRASS commands, but are public domain
capabilities that may be useful to those advanced GRASS sites.

gctp/
  General Cartographic Transformation Package.  Product of USGS.
  (MIT modified for State Plane in north-west hemisphere projections.)

rim/
  Product of UW, Seattle and Central Washington University
  Relational Information Management system.  Freely distributable 
  dbms married to GRASS through the programs v.db.rim and s.db.rim.

xgen/
  Product of CERL, Purdue, and MIT.  Provides shell script writers
  with the ability to generate graphical user interfaces via X-windows.
  Requires X and Motif to compile.